asking cia director will testify about benghazi later this week in petraeus's point. but at some point they will likely call on the retired four-star general to testify. danielle leigh, nbc bay area news. >> danielle, thank you. >>> from teenagers now to the multimillionaires, concussions do not death row inmate interstate. alex smith spoke with a neurologist today after getting knocked out of yesterday's game. smith actually stayed in the game for about six plays after the damaging blow to his head. despite having blurry vision, threw a touchdown pass to michael crabtree. he was one of three quarterbacks with concussions yesterday. once again football safety on all levels is in if headlines this evening. damian, this is a growing dlimia, especially for college and high school players. >> reporter: it is, raj. and you remember before the coaches and trainers would give smelling salts to the injured player to get them coherent again, then they would throw them back on the field. the rules are strict now, both for the pros and the amateurs. alex smith was hit in the bac